Cognomen Чернофф (Чернофф 
, Tchernoff 
) , worldwide, is a very rare family name. The family name Чернофф is habitual in France, where it is a very rare surname, New Zealand, and Canada. Not in comparison with a country's population, this name is the most popular in France, Canada, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Чернофф | Russia, Ukraine |
| Tchernoff | Netherlands, United States, Canada, France, New Zealand |